Automatic update of fbcode/onnx to 04a29addfd5b912812addb8dea5f8763fbfaad01 (#33328)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/33328

Previous import was 8b3f7e2e7a0f2aba0e629e23d89f07c7fc0e6a5e

Included changes:
- **[04a29add](https://github.com/onnx/onnx/commit/04a29add)**: Use // instead of # (#2598) <Lu Fang>
- **[f8e140a9](https://github.com/onnx/onnx/commit/f8e140a9)**: Kezhan/function update (#2596) <Ke Zhang>
- **[6185faae](https://github.com/onnx/onnx/commit/6185faae)**: fix the attribute types section in IR.md (#2590) <Ke Zhang>
- **[f254647a](https://github.com/onnx/onnx/commit/f254647a)**: Allow Constant operator to promote scalar and list to tensors. (#2592) <Jeremy Cochoy>
- **[f12ec799](https://github.com/onnx/onnx/commit/f12ec799)**: Add NegativeLogLikelihood(NllLoss) op (#2551) <liqunfu>

Test Plan: ci

Reviewed By: hl475

Differential Revision: D19897554

fbshipit-source-id: d8efb5c5ac8f9d71727de33c67af681ed8ec8123

caffe2/python/onnx/tests/onnx_backend_test.py

@@ -83,6 +83,7 @@ backend_test.exclude(r'(test_hardsigmoid'  # Does not support Hardsigmoid.
                      '|test_dropout_random.*'  # opset 12 is not supported
                      '|test_einsum.*'  # opset 12 is not supported
                      '|test_.*training.*'  # training is not supported
+                     '|test_.*_loss.*'  # training is not supported
                      '|test_split_zero_size.*'  # unsupported case
                      '|test_constantofshape_int_shape_zero.*'  # unsupported case
                      '|test_constant_pad.*'  # 1d pad is not supported